1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0d9ae338d8ca9efd394bf54b2769092b1f3791367882367e5d10711f8fbec5. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be3e2290-6e8b-439e-8b09-93b707c877f8.json and https://artists.proofprofile.net/proofs/artist/be3e2290-6e8b-439e-8b09-93b707c877f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8b911aae4fe94a3765c6321620d6ce3d9b8790e8ef574d716f656ad28c1efd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAT71106192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5071291a50adf37e805291b11384637e4e029aee4e2669193aae23932b131ab3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAT71003895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b45b35ff15dfa4ca5ff85327cd685c88deb824a0b90f6242fdce9217b515357. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAT71106194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7700559960804d1e1da016fb19c7ef9fcaaf5bebb2458904d205afa3ada439. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAT71003897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107e027d86e1ea376d085d2bdbcbb12ee7ad62569cc3669fdc8d979eedf62a8a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAT71106203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1352bc716793d5824b86ba5cf54ae7663acaf375bfa2e38f367f0e55b14166. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAT71105441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b7631f824a38ea2883062acecf28401172285bc7f2705093afa2926177dc84. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES561692201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03313e9c086ec535223cd969be5e94231d5ba39750a5a6a8ceed3164c2aeab87. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVZP1800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb75f5104e8a23f6c2493f632f39d55862850a0f3398de1caaec2df67d42f9b4. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVZP1800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e2986cddb633c8767e37b2d3230293342dd81430e00d73d2ec14271925c89d. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVZP1800203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b169ed0ccba2bd3ff2757bebe4d11077024dbfc718247967d408c2e6200d50. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVZP1800204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7246702e19d9e2cce82b64df98797e9f3af1c320fc2fda535a8a9216130b84. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVZP1800205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92d3a05b0ed2cabb538fde9239d9f73c3b67f3592c5410cbcc6d27eb9eac5c2. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVZP1800206.
Electronic Saviors - Industrial Music To Cure Cancer, Vol VI: Reflection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22631080a975c38e1fb02354bb880b1f7ca876c022ad0d88da5d3d7a73477b2b. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US57M2021635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9878a433c0e3f4366adabfafcb88149734210432dcccc99535279eda651baa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US57M2021640.
Lower Than This (Someday) - Daniel Myer Cut Short Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1165589576dc7f1bb395136562276500fddedf67f17b2e241cd4dd9f158628c6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVZP1700202.